Press for producing dimensionally stable preforms and production process

US11278962B2 · kind B2 · utility

Assignee

• GKN Sinter Metals Engineering GmbH · DE

Inventors

• Rainer Schmitt · Meckenheim, DE
• Ümit Aydin · Meckenheim, DE

Key dates

• Filing date: Mar 18, 2015
• Grant date: Mar 22, 2022
• Expiry date: Dec 14, 2035

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02P10/25
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

The invention relates to a press for producing dimensionally stable preforms from material that is substantially in the form of a powder, in particular iron powder and or ceramic powder, with a tool comprising an upper die and a lower die, wherein the upper die and the lower die respectively comprise at least one die, wherein a first die and a second die are arranged together, one sliding in the other, as the upper die or lower die and respectively have a first end and a second end, lying opposite the first end, wherein at least one of the two dies spreads out along one portion to such an extent that the second end thereof has a width that at least approaches an outer diameter of a die holder associated with the second end. This allows presses of a compact form to be made available for producing dimensionally stable preforms of high quality and great complexity.